.refresh {
    height: 100px;
    width: 100%;
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
}

.round {
    width: 40px;
    height: 40px;
    border: 6px solid #bbb;
    border-top-color: #4E96F5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 旋转动画关键帧 */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}